Home / 85,662,378.04-128,222,495.22-54,915,866.68

Finding the Fourth Proportional to 85,662,378.04, 128,222,495.22 and 54,915,866.68

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Solution

The fourth proportional to 85,662,378.04, 128,222,495.22 and 54,915,866.68 is: 82,200,023.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,662,378.04 : 128,222,495.22 = 54,915,866.68 : x
  2. Step 2: Convert to fraction form
    85,662,378.04/128,222,495.22 = 54,915,866.68/x
  3. Step 3: Cross multiply
    85,662,378.04x = 128,222,495.22 × 54,915,866.68
  4. Step 4: Simplify right side
    85,662,378.04x = 7,041,449,452,878,457
  5. Step 5: Solve for x
    x = 7,041,449,452,878,457/85,662,378.04
  6. Step 6: Final answer
    x = 82,200,023.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.